QUOTE(Yodrak @ Apr 13 2007, 09:41 PM)

spmalone,
You do not have to change your name on your Vietnamese passport if you do not wish to, unless Vietnamese law requires you to. My wife hasn't changed her name on her passport, or on any of her other native-country documentation, and for reasons of her own has no intention of doing so.
hcj's suggestion to carry a copy of your marriage license to reconcile the difference between your passport and your green card is a good one. (The other advice in his post is not, unless that's what you want to do.)
Yodrak
Yodrak,It's not always that easy, unfortunately.
I had the same experience of the OP, at the POE. I was re-entering the US when the Officer told me the passport and the GC HAVE to match as the US can't change the last name of an immigrant. He told me: "No big deal, I see it all the time, but it's ILLEGAL to have the GC not matching the passport and you need to change either one".
I told him that in my country women can't legally put their married names on ID's, so he suggested that I changed my GC and wrote: "I-90" as a note on my passport.
Now, I traveled plenty of times before, and nobody ever told me that it's illegal to have my married name on my GC, actually nobody ever asked any questions about it, or never even asked to see the marriage certificate. Needless to say, I freaked out and I'm worried about that "I-90" note on my passport. I can't change my passport and I can't change my GC either right now, since I need it to apply to remove conditions pretty soon, plus all my other US documents (state ID, SS#) are in my married name, too. I'll keep carrying my marriage certificate with me for now, hoping that everything will be ok and I will try to talk to the Embassy again about adding my married name on the passport. I just can't help but wonder if that Officer was wrong about it or, if he was right, why NOBODY told us before that changing an immigrant's last name is ILLEGAL????? Why do they even give you that option, if it's not right??? All I always heard, even at my local office, was: "It's ok, just carry a copy of your marriage certificate with you and you'll be fine". Well, that officer didn't even care about the certificate!
Sorry, just needed to vent. Hope you guys can give me your opinions about this!
Best wishes.